D Question 3 2 pts (CO 6) Find the regression equation for the following data set X 245 287 198 189 176 266 210 255 V 50 80 55 78 44 57 51 70 O y = 0.14x - 28.43 O cannot be determined O y = 0.14x + 28.43 O y =-0.14x + 28.43D Question 9 2 pts (CO 6) A data set whose original x values ranged from 28 through 49 was used to generate a regression equation of y = 2.9x - 34.7. Use the regression equation to predict the value of y when x=44. O 92.9 O 90.6 260.4 O Meaningless resultD Question 18 2 pts (CO 6) The equation used to predict how many days it takes a 15-year old to read the first Harry Potter book is y = 1.5 + 2.82x1 - 1.04x2 days, where x1 is the weekly hours of other activities and x2 is the reading grade level. Use this equation to predict how many days it will take to read this book for someone with 12.8 weekly hours of other activities and a 10.9 reading grade level. O 18.93 days O 74.43 days O 25.82 days O 26.26 days